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Comparison of the enzymatic activity of three commercial PSA preparations.Data show PSA (5 μg/ml) hydrolysis of the fluorophore AMC from the substrate Mu-SRKSQQY-AMC (300 μM) over 40 min incubationin the absence or presence of 10 μM aprotinin. Assay was performed in triplicate and standard error bars are shown.[Color figure can be seen in the online version of this article, available at http://wileyonlinelibrary.com/journal/pros]
